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RIAK VS. CASSANDRA
INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.BUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desired USE CASES FOR RIAK KV Use Cases For Riak KV Riak is a flexible data storage technology capable of addressing a wide variety of problems in a scalable way. In this guide, we’ll list a number of use cases and data models thatare
CONFIGURING AN S3 CLIENT Shell. s3cmd -c /PATH/TO/CONFIG/FILE < command >. Another way to configure s3cmd is to run s3cmd --configure, which launches an interactive tool that will assemble a configuration file for you on the basis of what you enter. In the next section you’ll find a few sample .s3cfg files that can be used to configure s3cmd to interactwith Riak CS.
ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TS GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss.RIAK VS. CASSANDRA
INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.BUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desired USE CASES FOR RIAK KV Use Cases For Riak KV Riak is a flexible data storage technology capable of addressing a wide variety of problems in a scalable way. In this guide, we’ll list a number of use cases and data models thatare
CONFIGURING AN S3 CLIENT Shell. s3cmd -c /PATH/TO/CONFIG/FILE < command >. Another way to configure s3cmd is to run s3cmd --configure, which launches an interactive tool that will assemble a configuration file for you on the basis of what you enter. In the next section you’ll find a few sample .s3cfg files that can be used to configure s3cmd to interactwith Riak CS.
RIAK CLOUD STORAGE
Riak Cloud Storage Riak CS (Cloud Storage) is easy-to-use object storage software built on top of Riak KV, Riak’s distributed database.Riak CS is designed to provide simple, available, distributed cloud storage at any scale, and can be used to build cloud architectures—be they public or private—or as storage infrastructure for heavy-duty applications and services.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak. DOTTED VERSION VECTORS (DVVS) By default, Riak KV addresses any inconsistencies by returning the most recently updated version, determined by looking at the object’s Dotted Version Vector, or DVV. DVVs are metadata attached to each data replica when it is created. They are extended each time a data replica is updated in order to keep track of data versions.RIAK DOCUMENTATION
Want to keep up to date with the latest news or get involved with our open source community? Learn MoreWHY RIAK KV?
Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak client can reach one Riak server, it should be able to write data. Riak is used as an eventually consistent system in that the data you want to read should remain available in most failure scenarios CONFIGURING AN S3 CLIENT Configuring an S3 Client This tutorial will show you how to use s3cmd as an S3 client. While it won’t cover all of the client’s features, it will show you how to create a configuration and run somebasic commands.
HTTP API - RIAK
Search-related Operations. Riak has a rich, full-featured HTTP 1.1 API. This is an overview of the operations you can perform via HTTP and can be used as a guide for developing a compliant client. All URLs assume the default configuration values where applicable. AllUSING SEARCH
Using Search Setup. Riak search 2.0 is an integration of Solr (for indexing and querying) and Riak (for storage and distribution). There are a few points of interest that a user of Riak search will have to keep in mind in order to properly store and later query for values.OPEN FILES LIMIT
Open Files Limit Riak KV can accumulate a large number of open file handles during operation. The creation of numerous data files is normal, and the backend performs periodic merges of data file collections to avoid accumulating file handles.. To accomodate this you should increase the open files limit on your system.ERLANG VM TUNING
Erlang VM Tuning Riak was written almost exclusively in Erlang and runs on an Erlang virtual machine (VM), which makes proper Erlang VM tuning an important part of optimizing Riak performance. The Erlang VM itself provides a wide variety of configurable parameters that you can use to tune its performance; Riak enables you to tune a subset of those parameters in each node’s configuration files. ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TS GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desiredBUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
HTTP API - RIAK
Search-related Operations. Riak has a rich, full-featured HTTP 1.1 API. This is an overview of the operations you can perform via HTTP and can be used as a guide for developing a compliant client. All URLs assume the default configuration values where applicable. AllBUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line.ERRORS & MESSAGES
Ensure that nodes are able to communicate with each other. See Step 1. {error,eacces} Cannot write a given file. Ensure the Riak beam process has permission to write to all *_dir values in app.config, for example, ring_state_dir, platform_data_dir, and others. {error,enoent}Missing an
ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TS GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desiredBUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
HTTP API - RIAK
Search-related Operations. Riak has a rich, full-featured HTTP 1.1 API. This is an overview of the operations you can perform via HTTP and can be used as a guide for developing a compliant client. All URLs assume the default configuration values where applicable. AllBUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line.ERRORS & MESSAGES
Ensure that nodes are able to communicate with each other. See Step 1. {error,eacces} Cannot write a given file. Ensure the Riak beam process has permission to write to all *_dir values in app.config, for example, ring_state_dir, platform_data_dir, and others. {error,enoent}Missing an
MASSIVE SCALABILITY
Riak KV is designed to address the problem of data availability with ease of scale. It has a masterless architecture that makes adding and removing nodes easy using commodity hardware. Riak KV can handle millions of keys, petabytes of storage, millions of users, and billions of data points. By automatically distributing data acrossnodes in a
DOTTED VERSION VECTORS (DVVS) By default, Riak KV addresses any inconsistencies by returning the most recently updated version, determined by looking at the object’s Dotted Version Vector, or DVV. DVVs are metadata attached to each data replica when it is created. They are extended each time a data replica is updated in order to keep track of data versions.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.RIAK KV
Riak KV is a distributed NoSQL database designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak KV client can reach one Riak server, it should be able to write data. Riak KV Enterprise includes multi-datacenter cluster replication, which ensures low-latency and robust businesscontinuity.
CLUSTERS - RIAK
Clusters Riak’s default mode of operation is to work as a cluster consisting of multiple nodes, i.e. multiple well-connected data hosts.. Each host in the cluster runs aWHY RIAK KV?
Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak client can reach one Riak server, it should be able to write data. Riak is used as an eventually consistent system in that the data you want to read should remain available in most failure scenarios CONFIGURING AN S3 CLIENT Configuring an S3 Client This tutorial will show you how to use s3cmd as an S3 client. While it won’t cover all of the client’s features, it will show you how to create a configuration and run somebasic commands.
USE CASES FOR RIAK KV Use Cases For Riak KV Riak is a flexible data storage technology capable of addressing a wide variety of problems in a scalable way. In this guide, we’ll list a number of use cases and data models thatare
USING SEARCH
Using Search Setup. Riak search 2.0 is an integration of Solr (for indexing and querying) and Riak (for storage and distribution). There are a few points of interest that a user of Riak search will have to keep in mind in order to properly store and later query for values.ERRORS & MESSAGES
Ensure that nodes are able to communicate with each other. See Step 1. {error,eacces} Cannot write a given file. Ensure the Riak beam process has permission to write to all *_dir values in app.config, for example, ring_state_dir, platform_data_dir, and others. {error,enoent}Missing an
ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TSRUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
RIAK CLOUD STORAGE
Riak Cloud Storage Riak CS (Cloud Storage) is easy-to-use object storage software built on top of Riak KV, Riak’s distributed database.Riak CS is designed to provide simple, available, distributed cloud storage at any scale, and can be used to build cloud architectures—be they public or private—or as storage infrastructure for heavy-duty applications and services. GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss. RIAK QUICK START WITH DOCKERBUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
RIAK KV KEY/VALUE MODELING Riak KV Key/Value Modeling While Riak enables you to take advantage of a wide variety of features that can be useful in application development, such as Search, secondary indexes (2i), and Riak Data Types, Riak almost always performs best when you build your application around basic CRUD operations (create, read, update, and delete) on objects, i.e. when you use Riak as a “pure” key/valueINSPECTING A NODE
Related Resources. When inspection of a Riak node to gather metrics on performance or potential issues is desired, a number of tools are available to help, and are either included with Riak itself or made available through the Riak community. This guide provides starting points and details on some of the available tools for inspecting aRiak node.
CONFIGURING AN S3 CLIENT Shell. s3cmd -c /PATH/TO/CONFIG/FILE < command >. Another way to configure s3cmd is to run s3cmd --configure, which launches an interactive tool that will assemble a configuration file for you on the basis of what you enter. In the next section you’ll find a few sample .s3cfg files that can be used to configure s3cmd to interactwith Riak CS.
ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TSRUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
RIAK CLOUD STORAGE
Riak Cloud Storage Riak CS (Cloud Storage) is easy-to-use object storage software built on top of Riak KV, Riak’s distributed database.Riak CS is designed to provide simple, available, distributed cloud storage at any scale, and can be used to build cloud architectures—be they public or private—or as storage infrastructure for heavy-duty applications and services. GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss. RIAK QUICK START WITH DOCKERBUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
RIAK KV KEY/VALUE MODELING Riak KV Key/Value Modeling While Riak enables you to take advantage of a wide variety of features that can be useful in application development, such as Search, secondary indexes (2i), and Riak Data Types, Riak almost always performs best when you build your application around basic CRUD operations (create, read, update, and delete) on objects, i.e. when you use Riak as a “pure” key/valueINSPECTING A NODE
Related Resources. When inspection of a Riak node to gather metrics on performance or potential issues is desired, a number of tools are available to help, and are either included with Riak itself or made available through the Riak community. This guide provides starting points and details on some of the available tools for inspecting aRiak node.
CONFIGURING AN S3 CLIENT Shell. s3cmd -c /PATH/TO/CONFIG/FILE < command >. Another way to configure s3cmd is to run s3cmd --configure, which launches an interactive tool that will assemble a configuration file for you on the basis of what you enter. In the next section you’ll find a few sample .s3cfg files that can be used to configure s3cmd to interactwith Riak CS.
GETTING STARTED OVERVIEW Getting Started Overview. Welcome, new Riak developer! This guide will get you started developing against Riak KV with minimal fuss.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.BUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
CLUSTERS - RIAK
Clusters Riak’s default mode of operation is to work as a cluster consisting of multiple nodes, i.e. multiple well-connected data hosts.. Each host in the cluster runs aREPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desired RIAK KV KEY/VALUE MODELING Riak KV Key/Value Modeling While Riak enables you to take advantage of a wide variety of features that can be useful in application development, such as Search, secondary indexes (2i), and Riak Data Types, Riak almost always performs best when you build your application around basic CRUD operations (create, read, update, and delete) on objects, i.e. when you use Riak as a “pure” key/valueUSING SEARCH
Using Search Setup. Riak search 2.0 is an integration of Solr (for indexing and querying) and Riak (for storage and distribution). There are a few points of interest that a user of Riak search will have to keep in mind in order to properly store and later query for values.RIAK CS CONTROL
The Users Page. When you first navigate to the Riak CS Control UI, you will land on the Users page: On this page you can quickly see all current Riak CS users along with their status, e-mail address, and credentials. From here you can filter, disable, create, and manage users in a Riak CS Cluster.BUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line.ERRORS & MESSAGES
Ensure that nodes are able to communicate with each other. See Step 1. {error,eacces} Cannot write a given file. Ensure the Riak beam process has permission to write to all *_dir values in app.config, for example, ring_state_dir, platform_data_dir, and others. {error,enoent}Missing an
ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TSMASSIVE SCALABILITY
Riak KV is designed to address the problem of data availability with ease of scale. It has a masterless architecture that makes adding and removing nodes easy using commodity hardware. Riak KV can handle millions of keys, petabytes of storage, millions of users, and billions of data points. By automatically distributing data acrossnodes in a
SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
DOTTED VERSION VECTORS (DVVS) By default, Riak KV addresses any inconsistencies by returning the most recently updated version, determined by looking at the object’s Dotted Version Vector, or DVV. DVVs are metadata attached to each data replica when it is created. They are extended each time a data replica is updated in order to keep track of data versions.RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.BUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desiredCLUSTERS - RIAK
Clusters Riak’s default mode of operation is to work as a cluster consisting of multiple nodes, i.e. multiple well-connected data hosts.. Each host in the cluster runs aBUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line. ENTERPRISE NOSQL DATABASE Riak’s Riak ® is a distributed NoSQL database that delivers: Riak provides all this, while still focused on ease of operations. Chose Riak ® KV flexible key-value data model for web scale profile and session management, real-time big data, catalog, content management, customer 360, digital messaging, and more use cases. Chose Riak ® TSMASSIVE SCALABILITY
Riak KV is designed to address the problem of data availability with ease of scale. It has a masterless architecture that makes adding and removing nodes easy using commodity hardware. Riak KV can handle millions of keys, petabytes of storage, millions of users, and billions of data points. By automatically distributing data acrossnodes in a
SETUP RIAK KV
Setup Riak KV In This Section Planning. Information on planning your Riak KV cluster including software & hardware recommendations. LearnMore >>
DOTTED VERSION VECTORS (DVVS) By default, Riak KV addresses any inconsistencies by returning the most recently updated version, determined by looking at the object’s Dotted Version Vector, or DVV. DVVs are metadata attached to each data replica when it is created. They are extended each time a data replica is updated in order to keep track of data versions.RUNNING A CLUSTER
Running a Cluster Configuring a Riak cluster involves instructing each node to listen on a non-local interface, i.e. not 127.0.0.1, and then joining all of the nodes together to participate in the cluster.. Most configuration changes will be applied to the configuration file located in your rel/riak/etc directory (if you compiled from source) or /etc (if you used a binary install of Riak).INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.BUCKETS - RIAK
Buckets Buckets are used to define a virtual keyspace for storing Riak objects. They enable you to define non-default configurations over that keyspace concerning replication properties and other parameters.. In certain respects, buckets can be compared to tables in relationaldatabases or
REPLICATION
Replication. Riak was built to act as a multi-node cluster. It distributes data across multiple physical servers, which enables it to provide strong availability guarantees and fault tolerance. The CAP theorem, which undergirds many of the design decisions behind Riak’s architecture, defines distributed systems in terms of three desiredCLUSTERS - RIAK
Clusters Riak’s default mode of operation is to work as a cluster consisting of multiple nodes, i.e. multiple well-connected data hosts.. Each host in the cluster runs aBUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line.INTRODUCTION
RELATIONAL TO RIA WHITEPAPER BASHO TECHNOLOGIES, INC. // WWW.BASHO.COM 1 INTRODUCTION This whitepaper will provide you with both background and detailed information on relational databases versus Riak.RIAK CLOUD STORAGE
Riak Cloud Storage Riak CS (Cloud Storage) is easy-to-use object storage software built on top of Riak KV, Riak’s distributed database.Riak CS is designed to provide simple, available, distributed cloud storage at any scale, and can be used to build cloud architectures—be they public or private—or as storage infrastructure for heavy-duty applications and services. RIAK QUICK START WITH DOCKER The goal of the quick start is to get Riak on your workstation and then establish a five-node cluster (in under five minutes). The quick start itself is based on the source build of Riak. The source contains a Makefile with a target labeled devrel. The devrel (or development release) automates the creation of 5 separate copies of Riak.CLIENT LIBRARIES
Riak-Supported Libraries. Riak officially supports a number of open-source client libraries for a variety of programming languages and environments. Note: All official clients use the integrated issue tracker on GitHub for bug reporting. In addition to the official clients, Riak provides some unofficial client librariesHTTP API - RIAK
Search-related Operations. Riak has a rich, full-featured HTTP 1.1 API. This is an overview of the operations you can perform via HTTP and can be used as a guide for developing a compliant client. All URLs assume the default configuration values where applicable. AllWHY RIAK KV?
Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak client can reach one Riak server, it should be able to write data. Riak is used as an eventually consistent system in that the data you want to read should remain available in most failure scenariosBUCKET TYPES
In Riak versions 2.0 and later, Riak suggests that you use bucket types to namespace and configure all buckets you use. Bucket types have a lower overhead within the cluster than the default bucket namespace but require an additional setup step on the command line. IMPLEMENTING STRONG CONSISTENCY Item Meaning; Enabled: Whether the consensus subsystem is enabled on the current node, i.e. whether the strong_consistency parameter in riak.conf has been set to on.If this reads off and you wish to enable strong consistency, see our documentation on enabling strong consistency.: Active: Whether the consensus subsystem is active, i.e. whether there are enough nodes in the cluster to use strongCONFLICT RESOLUTION
Conflict Resolution One of Riak’s central goals is high availability. It was built as a clustered system in which any node is capable of receiving requests without requiring that every node participate in each request.. If you are using Riak in an eventually consistent way, conflicts between object values on different nodes is unavoidable. Often, Riak can resolve these conflicts on its ownERRORS & MESSAGES
Ensure that nodes are able to communicate with each other. See Step 1. {error,eacces} Cannot write a given file. Ensure the Riak beam process has permission to write to all *_dir values in app.config, for example, ring_state_dir, platform_data_dir, and others. {error,enoent}Missing an
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HELPING ENTERPRISES BUILD MORE RESILIENT APPLICATIONS WHEN ACCURATE DATA MATTERS To address global audiences modern web and IoT applications must be built to be highly distributed. But this presents a few challenges. Distributed Systems Challenges:* Data Availability
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Browse our latest documentation . FEATURED TOOLS & TRAINING * Riak Explorer – provides browsing and admin capabilities for Riak. FINALLY A NOSQL DATABASE THAT BRINGS YOU TRANQUILITY AND PEACE OF MIND When seconds of latency can cost thousands of dollars and an outage millions, the call for scalable, highly available databases that are easy to operationalize is resoundingly clear. Riak performs as promised and keeps the lights on. After a stringent evaluation process, we decided that Riak’s flexible, scalable database was best-suited to our needs. - Martin Davies, CEO of Technology, bet365 Initiatives such as integrating Riak KV with Redis and Apache Solr have the potential to ease our future development workloadconsiderably.
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